Business Details
44 Years
experience
Emergency
services
Trusted HVAC Services in Norwalk, CT
T&H Mechanical Systems has been a trusted HVAC provider for Fairfield and Westchester communities since 1982. As a family-owned business with over four decades of experience, we combine generational expertise with NATE-certified technicians to deliver residential and commercial heating, cooling, and indoor air quality solutions. Our commitment to quality installations, same-day service, and 24/7 emergency repairs ensures uninterrupted comfort for homes and businesses.Backed by partnerships with industry leaders like Carrier and Trane, we prioritize honest pricing, energy-efficient systems, and personalized service. Our team's technical proficiency and dedication to customer satisfaction have made us the region's preferred HVAC partner, serving both immediate needs and long-term maintenance requirements.
Services
Residential HVAC
Commercial HVAC
Indoor Air Quality
Emergency Repairs
System Installations
Thermostat Services
Ductless Systems
Boiler Services
Heat Pump Solutions
Zone Control Systems
Details
- Year established: 1982
Highlights and features
- 40 years of combined experience in residential and commercial HVAC systems
- NATE-certified technicians ensure industry-leading technical expertise
- 24/7 emergency repair services with rapid response times
- Authorized dealers for Carrier and Trane heating and cooling systems
- Same-day service available for urgent HVAC requirements
Associations and certifications
- NATE
What people say
Very professional
No mess
Great service
Exceeded expectations
Prompt service
Services
Residential HVAC
Comprehensive heating and cooling solutions for single-family homes and residential properties. Our NATE-certified technicians install, repair, and maintain energy-efficient HVAC systems tailored to individual household needs. Services include furnace and air conditioner replacements, thermostat upgrades, and seasonal maintenance to ensure optimal performance and energy savings.
Commercial HVAC
Specialized HVAC services for light commercial properties up to 25 tons. We provide system installations, emergency repairs, and preventive maintenance for offices, retail spaces, and small businesses. Our team ensures compliance with commercial efficiency standards while minimizing operational disruptions through scheduled service agreements and rapid response capabilities.
Indoor Air Quality
Advanced air purification and ventilation solutions to improve residential and commercial air quality. Services include installation of air filtration systems, dehumidifiers, UV purifiers, and energy recovery ventilators. We address specific concerns like allergens, humidity control, and ventilation efficiency to create healthier indoor environments while maintaining HVAC system performance.
Emergency Repairs
Around-the-clock emergency HVAC repair services for urgent heating and cooling failures. Our rapid response team addresses system breakdowns, refrigerant leaks, and equipment malfunctions with same-day service availability. We prioritize restoring comfort quickly while ensuring long-term solutions through proper diagnostics and quality repairs.
System Installations
Professional installation of Carrier and Trane HVAC systems for residential and commercial properties. We handle complete system replacements, ductless mini-split installations, and zone control system implementations. Our technicians ensure proper sizing, efficient operation, and manufacturer warranty compliance while providing guidance on energy rebates and financing options.
People
Harold
Founder & Owner
With over 40 years in the HVAC industry, Harold established T&H Mechanical Systems as a family-owned business committed to technical excellence and customer satisfaction. He oversees daily operations and ensures service quality standards are maintained through continuous technician training and hands-on project management.
Questions
What HVAC services do you offer for residential customers?
We provide complete residential HVAC solutions including furnace and air conditioner installations, repairs, and maintenance. Our services also cover ductless systems, thermostat upgrades, and indoor air quality improvements.
Are your technicians certified and insured?
Yes, all our technicians are NATE-certified with specialized training in residential and commercial HVAC systems. We maintain full insurance coverage and licensing for all service work.
Do you offer 24/7 emergency HVAC repair?
Yes, we provide 24/7 emergency repair services with same-day response available for urgent heating and cooling system failures across our service area.
What maintenance plans are available?
We offer customized maintenance agreements including seasonal tune-ups, priority service scheduling, and 10% discounts on 2-year plans to ensure system longevity and efficiency.
Which areas do you service?
We serve Fairfield County and Westchester County including Norwalk, Stamford, Greenwich, Westport, and White Plains for both residential and commercial HVAC needs.
Reviews (6)
Michael Rosato
Nov 05, 2019
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At the beginning of this summer, the unit I bought last year from Harold was not doing its job. Took a few times to figure out what was going wrong. Harold came out three times to fix it at no charge. Excellent prompt service. He made it right and did it with a smile.
Marybeth Darcy
Jun 16, 2019
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Always responsive, honest, on time and fixes it the first time. I will never hesitate to refer friends to Harold and his team
Matt Ellis
Jun 24, 2018
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They converted our oil boiler to gas and gave a good price. They were professional and kept to the schedule. Over the last couple of years we have had issues with the boiler we chose. Harold has personally dealt with the company, making sure the warranty was adhered to and eventually pushed for a brand new boiler, which we received. They then offered to fit the new boiler for free, even though the fault was with the boiler itself, which they did. They stood by their work, were always out immediately when needed and have given a great service over the last couple of years.
James Casey
May 24, 2017
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This was my best experience with a contractor in our new home. Harold the owner was very good at walking the system explaining to me what he was looking at so I learned the system as a new owner. He found the issue, not only fixed that, he fixed a couple other small items. The entire time explaining to me what he was doing so I could look after the system unless there was a major issue. I was not clear how much I would be charged above and beyond the fee to come out. He charged me for the one hour with no add on charges or fees. We plan on living here for a long time and T & H Mechanical have earned
Ken Benson
May 10, 2017
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Beware!!! Harold and Joe are deceitful and negligent! I am currently having a horrible experience. 9 Months ago Harold sold me a "whole new system"(2.5 ton) for $6500 complete. He did not tell me it would not include parts as directed by Carrier for a proper installation. In the winter, the heater did not work and he made excuses to charge me $1,100 (originally billed $1,800, yet quoted by Harold $700 prior to work) for putting another air return hole in my office wall because there was a air restriction and when complete it still did not work. Turns out he installed too small an air opening in
Kim F.
Aug 07, 2014
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I can't say enough good things about Harrold and his company; but I will name a few! 1) The first good sign was when I called for a quote and he called me back the same day!
2) He was extremely flexible with my crazy work schedule by completing the work over two days. He thought creatively so I didn't need to wait for air conditioning and suffer in this heat.
3) When my boyfriend and I needed to pay for the unit, Harrold opened 1/2 hour early to accommodate the early train my bf needed to catch. These are all great reasons....but the best part was the education he gave me about
2) He was extremely flexible with my crazy work schedule by completing the work over two days. He thought creatively so I didn't need to wait for air conditioning and suffer in this heat.
3) When my boyfriend and I needed to pay for the unit, Harrold opened 1/2 hour early to accommodate the early train my bf needed to catch. These are all great reasons....but the best part was the education he gave me about
